Setting machine for time fuses



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SETTING MACHINE FOR TIME FUSES Filed Oct. '7. 192's 4 Sheets-Sheet 4 Inn enl st 0: Auzr 'jin zans Patented Aug. 13, 1929.

UNlTED STATES PATENT OFFICE.

OSKAR JUNGHANS, 035 SCHRAMBERG, GERMANY; SII E GFRIED JUNGHANS, ADMINIS- TRATOR OF SAID OSKAR 3' UN GHAN S, DECEASED.

SETTING MACHINE FOR TIME FUSES.

Application filed October 7, 1926, Serial No.

This invention relates to machines for setting mechanical time fuses which are applied to artillery projectiles for the purpose of exploding the projectile after lapse of a 5 'iven time following the firing of the proectile from a gun, and more particularly to a machine comprising asetting device having two parts which are adapted to be adjusted or set with relation to each other and 10. which are secured in their adjusted or set position by means of a releasable locking-de- VICB.

The object of the invention viewed from its broadest aspect, is to provide a machine 15. having a plurality of setting units or devices adapted to be set, locked or released simul-' taneously or jointly, so that the machine will afford the possibility of setting several fuses at the same time and moreover setting the same in a manner that the several fuses will be adjusted or timed for different predetermined periods which is of advantage in all cases where it is diflicult to exactly value the true distance between the gun and the aim, particularly in case of defense against aeroplanes.

With'the above recited object in view, the invention resides in the novel construction set forth in the following specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein, to the full extent indicated by the general meaning of the terms in which the claims are expressed, and that the phraseology which I have adopted is for the purpose of description and not of limitation except where the sense absolutely 40 requires it.

In the accompanying drawings, forming a part of this specification and showing for purposes of exemplification a preferred form and manner in which the invention may be embodied and practiced, but without limiting the claimed invention to such illustrative instance:

Figure 1 is a longitudinal vertical section of a machine equipped with means for setting three fuses at a time or simultaneously;

Figure 2 is'a vertical cross-section thereof, partly in elevation;

Figure 3 is a front view thereof;

Figure 4 is a view in top plan, partly in 5 section;

140,105, and in Germany January 15, 1926.

provided one of which is disposed' in a horizontal plane whilethe ot her two are ar ranged vertically with relation tofl 'the former." The horizontaPsettingimit or device comprises a cylindricalpart '2 T mounted in the frame. so as to be revoluble' the'rein, a-

hand-wheel 3"bei1ig='-rigi'd1y connected iwith 'the said part' 2 bymeans 'of screws, and

provided with a scale as iusual, cooperating with a stationary index or ointer 4 fixed to the frame; as will be clear yseen in 'Fig' meet, to indicatethe degree' orvalue to which the hand-wheel has'been set. Mounted in the cylindrical partis'or casing" 2 as a cylindrical cup 5 the longitudinal axis of which coincideswith the axis of the casing 2, but which is stationary that is to say, prevented from rotation-inthe latter, as will be explainedmore in detail. T

In front of the parts 2 and 5 forming a setting unit or device :there is provided a support-6 for the projectile equipped with the fuse to be set and it will be seen in Figure 1 that the shape and size'of the cylindrical cup 5 is such as to permit introducing the fuse sufficiently, that is to the required depth, no matter whether the same is rounded or tapering, as indicated by dotted lines in Figure 1. Inthe'front end of the rotary casing 2 there is a spring-controlled detent 7 adapted to engage in a correspondingly shaped recess of the base section of the fuse firmly attached to the projectile. The cylindrical cup 5 is likewise provided with a spring-controlled noseor detentS adapted to catch, under the action'of its spring 9,'into the top section or cap of the fuse which is adapted to be. rotated: for the timlng purpose, see Figures 1 and 5.: A

The cons tructionof the machine so far 1 described is known' from a 'genera'l point of View.

Laterally adjacent to the horizontaliseu and immediately behind the front bearing ting unit constituted mainly bythe two parts 2 and 5, there are provided two similar set j ting units or devices constituted by similar parts 10, 11 and 12, 13, respectively, and mounted in the frame so as to occupy vert1-' cal positions with relationto the described setting unit 2, '5. The casings and 12, respectively, of the two vertical setting units are likewise capable of; rotation, while thetwo inner cups 11 and 13, respectively, thereof are stationary in the supporting casings, just as the corresponding. parts of ihehori zontal setting unit, and in a-similarHnanner spring-controlled noses or detents 7 and 8, see Figure 2, adapted :to engage-win corre spondingly shaped recesses of the.- two sec tions of-the'fuses; are providedi'n the casings and the cups of the vertical-setting devices. In the topof thelatter' there are also pro;- vided tubularholders 6 "and 6 "for then-sception ofy'the Eprojectiles and these holders, therefore, serve the samepurpose-as the support 6 the only difference-being that the "pro-- jectile 'is to be"inserted vertically therein withthe fuse downwardsi 1 1' 3 Intermediate-betweenits two 'ends the cas with a spur gear wheel 24 of a train of toothed wheels 24, 25 and 26.' The actuating shaft 27 of the wheel 26 thus will be turned, upon the rotation of the shaft 22 by means of the handle 21, and'as the'fiat" shaped inner end 28 of the shaft 27 engages between theannular discs or rings 17 and 18, see Figuresl and 6, the latter will be displaced fromthe released position-to the locked position, or vice versa, just as the 5 handle 21 is turned in the one or the other direction.

Keyed to the rear end of theshaft 22 is a worm-Wheel 29 meshing with a similar wheel 30 keyed to a transverse shaft 31 dulys upported in bearings provided on the bottom of the frame. -Firmly connected-to the extrer'nitie's of the shaft 31 are-two cams 32 7 each adapted-'to co-operate with two rollers of two levers 33 and 34 for the purpose of B5 z-turning-or swinging the same at the same time in opposite directions and against the action of springs controlling the said-levers; Each-pair of levers 33 and 34 en,g age--'b'e-v tween the-annular discsor rings 19 and-20, g of thefriction roller lock mechanisms of .the'wing '2 of-the sett ing'unit 2gc5isishaped-on its two vertical-setting devices, respectivelyythe outer-czperiphery toiformr'arkind of a worm wheel 14 adapted toengage in corresponding worm-wheels of rims 514 'andiT: 14 provided i on the casings 1'0 and 12, -respectively,iof the two v'ertical," setting devices-, rso that upon turningthe' hand+wheel 3fboth :the horizoiital setting unit for device 2, 5wand the two vertical'setting devices-10, 11 and-12, 13 will be rotated-in unison-r 'Mounted'between theparts 2' and" 5, 10 and-.11 and I2 and 13- of the three'settin'g devices, respectivelyi is alockmechanism consisting of'friction 'rollers'15 supported alternately in or by annular discs 17 and 18, in the horizontal'setting device, and annular discs 19 and'2O inthe two vertical setting devices. All of .these clamping or friction rollers are controlled: by springs 39 ea'chmounted between two adjacent rollers and'acting to hold the'rolle'rs inffrictional-en ageinent. The rollers 15 lie in recesses of the stationary parts 5, 11 and 13 of thesetting devices and areadapted to normallyprevent-the rotatable parts or casings-2,- 10 and 12 thereof from rotation-in a manner which is known in itself-a flhe said recesses in which-the rollers 15' are'accommodated, are of increasing width towards theone end thereof. -By turning-the -ztnnular discs with relation to each other thelock mechanisms may be releasedor unlocked-for the purpose" of adj usting' the machine; *w'hefl' requined' or desired; a

To this end I a' handle "21' keyed to a "shaft 22 is provided at the front end of the-nia=--= chine. The shaft 22 issupported 1-iI1 suit able bearings in the bottom of theframe 1" a pinion23 iskeyd -to theshaftdneShing arrangement being such that upon turning" the handle 21 for degreesin the ;one br r the other direction the friction roller meehanismswill be simultaneously causedto-Iock the casings and prevent them from rotation or to unlock the same and allowthem to -r0tate.l M

The inner cylindrical cup 5; of thehorizontal setting device is elongated atits front end to form a shaft-likeextension on which a disc 35 is loosely mounted so as to be inov-- able lengthwise on the shaft 'likeextension,

but prevented from rotation thereabout by means of a guiding rod 36 mounted in 'asuitable guiding bracket in parallelism to the said shaft or extension. The front or free end of thelatter is bored and threaded for the reception of a screw 37 secured- -=a-gainst' displacement in axial direction and having on its free end a handle'38; By

turning the handle 38 which is rigidly connected with the screw 37, the setting device comprising the parts 2 and 5, the hand-wheel '3 and the scale attached to the latter can be -moved as a unit in the direction of the axis of the parts. The operation of the machine is as follows:

By manually turning the handle2'1 in the required direction the frictionmollerniechanism of the three" setting-devices arer eleased or unlocked "and-them: by turning manually the hand-wheel 3 all of the'three'125 setting devices are set to thedesired period. This done the handle 21 is turnedin oppos'ite direction in order to returh "the f1'i6hitifi Proller mechanism to their locking positions whereby the rotatable parts or casings2g10 130-- and 12 of the several setting devices are simultaneously locked and secured against rotation. The machine now is ready for use, that is for the reception of the projectiles with the fuses duly attached thereto. The projectiles are inserted into the supports or holders 6, 6 and 6 respectively, in a manner that the detents 8 engage in the correspond ingly shaped recesses provided for the purpose in the top sections of the fuses, as hereinbefore explained, whereupon the projectiles are to be turned about their axes until the detents 7 catch into the recesses provided for the purpose in the base sections of the fuses which are firmly connected with the projectiles.

In some cases it will be desirable to set the three fuses for different periods or desired times of ignition, that is to say, for instance, to set and time the fuse in the horizontal setting device exactly to the calculated or desired period, the second fuse to a period a little in excess thereof and the third fuse a little below the calculated or desired period. In the described machine it is only necessary for the purpose to turn, previously to the operation of returning the friction roller mechanisms to the locking position, the screw 37 by means of the handle 38 in order to displace the cylindrical cup 5 of the horizontal setting device a little in axial direction. As above described the casing 2 of the horizontal setting device is also displaced simultaneously therewith and the axial displacement of the latter results in that, due to the particular construction and arrangement of the worm-wheel gearings 14, 14 and 14 the two vertical setting devices are displaced for a certain small amount, with relation to the period of the horizontal setting device, that is to say, the one to the right hand side, the other one to the left hand side or the one in clock wise direction and the other one in anticlockwise direction, so that the periods which the two vertical setting devices will set, will differ a little from the period of the horizontal setting device, upwards and downwards, respectively. Consequently the fuses of the three projectiles to be set by the machine will actually be set for different periods as desired.

What I claim is 1. A setting machine for timing or setting fuses in projectiles comprising a horizontal setting device; two vertical setting devices, said devices comprising a stationary part and a rotatable part; gearing for interconnecting the rotatable parts of the devices; and a single handle for simultaneously setting said rotatable arts.

2. A setting mac ine for timing or setting fuses in projectiles comprising a horizontal setting device; two vertical setting devices, said devices comprising a stationary part and a rotatable part; gearing for interconnecting the rotatable parts of the devices; a single handle for simultaneously setting said rotatable parts; and a friction roller mechanism for locking the rotatable parts, said mechanism comprising rollers, annular -discs in which the rollers are alternately mounted, and adapted to be displaced with relation to each other, a shaft simultaneously operating the discs and for throwing the rollersout upon rotation of said discs, a train of toothed wheels and an actuating shaft for operating the discs of the horizontal setting device, and a plurality of levers for operating the discs of the vertical setting devices.

3. A setting machine for timing or setting fuses in projectiles according to claim 2 in which a stationary part of the horizontal setting device is displaceable in axial direction, so that upon displacement of the stationary part, one of said vertical setting devices will beset or timed to be a little in advance of the period of the horizontal setting device and the other vertical setting device will be set or timed for a little shorter period than that of the horizontal setting device.

4:. A setting machine for timing or setting fuses in projectiles comprising a plurality of setting devices for the reception of a plurality of projectiles each comprising a stationary part and a rotatable part adapted to be adjusted with relation to each other; gearing for interconnecting the rotatable parts; a single handle for simultaneously setting said rotatable parts; and a friction roller mechanism for locking the rotatable parts.

In testimony whereof I affix my signature.

OSKAR J UNGHANS. 

